A stimulation device notably for testing radio reception devices is provided. It includes a signal generator delivering an amplitude-phase law for beam-forming purposes, transmitted in the form of a composite laser beam which illuminates a matrix of photodiodes of an emission subassembly with active modules separate from the generator, each wavelength of the beam carrying one of the signals defining the amplitude-phase law, intended for an active module. The device comprises means for measuring the orientation of the composite laser beam relative to the matrix of photodiodes of the emission subassembly and the distance traveled by the beam thereto, and correcting the phase law generated by the signal generator so as to neutralize the stray phase-shifts induced by these parameters on the signals transmitted to the emission subassembly.
Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
4. The radiant panel radio stimulation device as claimed in claim 3, wherein the values α, β and D are determined by considering a plurality of non-aligned points Cn, situated on the surface of the set of photodetectors, and by determining a distance Dn separating the point emission M of the composite laser beam from each of the points Cn considered.
5. The radiant panel radio stimulation device as claimed in claim 4, wherein at least three non-aligned points are considered.
7. The radiant panel radio stimulation device as claimed in claim 4, wherein the distance Dn is measured by laser rangefinding.
8. The radiant panel radio stimulation device as claimed in claim 4, wherein the distance Dn is measured by using the composite laser beam produced by the subassembly generating excitation electrical signals.
9. The radiant panel radio stimulation device as claimed in claim 1, wherein the set of photodetectors consists of a matrix of photodiodes each associated with an optical filter configured to allow the exposure of a photodiode considered of the matrix of photodiodes only to one of the laser waves modulated by said excitation electrical signals and forming the composite laser beam.
10. The radiant panel radio stimulation device as claimed in claim 1, further comprising an electrical signal generator subassembly and at least two emission subassemblies, an aimed optic being configured to direct the composite laser beam alternately to one or more of the emission subassemblies, the correction system being configured to deliver, at each moment, the corrected phase law {Δφn′} corresponding to the emission subassembly to which the composite laser beam is directed at the moment considered.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
September 7, 2018
November 1, 2022
Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.